Citation: Pei WANG, Chun-Hua HUANG, Xu-Lin CHEN, Can-Zhong LU. A Tetranuclear Cuprous Halide Cluster Exhibiting Efficient Blue Thermally Activated Delayed Fluorescence[J]. Chinese Journal of Structural Chemistry, ;2021, 40(11): 1489-1495. doi: 10.14102/j.cnki.0254-5861.2011-3197 shu

A Tetranuclear Cuprous Halide Cluster Exhibiting Efficient Blue Thermally Activated Delayed Fluorescence

Pei WANG ^{a, b, e} ,
Chun-Hua HUANG ^{b, c, d} ,
Xu-Lin CHEN ^{a, b, c} ,
Can-Zhong LU ^{a, b, e,,}

a.
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
b.
Xiamen Institute of Rare-earth Materials Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
c.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
d.
Huaqiao University, Xiamen 361021, China
e.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: Can-Zhong LU, czlu@fjirsm.ac.cn
Received Date: 26 March 2021
Accepted Date: 13 May 2021

Fund Project: the Strategic Priority Research Program of the Chinese Academy of Sciences XDB20000000the Key Research Program of Frontier Science, CAS QYZDJ-SSW-SLH033the National Natural Science Foundation of China 52073286the National Natural Science Foundation of China 21805281the National Natural Science Foundation of China 21875252the Natural Science Foundation of Fujian Province 2006L2005the Natural Science Foundation of Fujian Province 2019J01125the Youth Innovation Foundation of Xiamen City 3502Z20206082the Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China 2021ZR132

Figures(6)

A new tetranuclear cuprous halide complex, (CuBr)₄(PN)₂ (PN = 2-(diphenylphosphaneyl)-6-methoxypyridine), was synthesized and fully characterized. In solid state, this complex exhibits efficient blue emission with a photoluminescence quantum yield of 43.3% and a decay time of 19 μs at room temperature. The theoretical calculations, combined with the temperature dependence of spectroscopic properties and emission decay behaviors, indicate that the emission in the solid state originates from the ^{1, 3}(MLCT + XLCT) excited states, which are in thermal equilibrium with a small energy gap of about 0.1 eV.
- cuprous complex,
- thermally activated delayed fluorescence,
- blue emission,
- photoluminescence
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